... *3W; 4). Support SD, MMC card; 5). Lithium battery, USB, adaptor. 1. Portable speaker;2. Metal case;3. Memory card slot: SD, MMC ... ;4. USB 2.0;5. Audio support: MP3, WMA, WAV;6 ... . Power supply: Lithium battery, USB or DC adaptor(Optional);10. Accessories: USB cable, manual, line-in cable, adaptor, gift box. Metal case portable speaker